Colorado Population by County

Data Item State
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Population, 2014 estimate - (Number)
County Value
Adams 480,718
Alamosa 16,177
Arapahoe 618,821
Archuleta 12,244
Baca 3,645
Bent 5,630
Boulder 313,333
Broomfield 62,138
Chaffee 18,363
Cheyenne 1,871
Clear Creek 9,187
Conejos 8,265
Costilla 3,568
Crowley 5,360
Custer 4,361
Delta 29,870
Denver 663,862
Dolores 1,978
Douglas 314,638
Eagle 52,921
El Paso 663,519
Elbert 24,195
Fremont 46,502
Garfield 57,461
Gilpin 5,851
Grand 14,546
Gunnison 15,725
Hinsdale 786
Huerfano 6,462
Jackson 1,396
Jefferson 558,503
Kiowa 1,402
Kit Carson 8,072
La Plata 53,989
Lake 7,357
Larimer 324,122
Las Animas 14,052
Lincoln 5,510
Logan 22,524
Mesa 148,255
Mineral 698
Moffat 12,928
Montezuma 25,772
Montrose 40,873
Morgan 28,328
Otero 18,488
Ouray 4,629
Park 16,345
Phillips 4,363
Pitkin 17,626
Prowers 12,034
Pueblo 161,875
Rio Blanco 6,707
Rio Grande 11,607
Routt 23,865
Saguache 6,196
San Juan 720
San Miguel 7,840
Sedgwick 2,348
Summit 29,404
Teller 23,389
Washington 4,780
Weld 277,670
Yuma 10,202

Value for Colorado (Number): 5,355,866

Data item: Population, 2014 estimate

Source: U.S. Bureau of the Census, Population Estimates Program (PEP). Updated annually. Census Bureau, 2010 Census of Population, Public Law 94-171 Redistricting Data File. Updated every 10 years.

Definition: Estimates are made for the United States, states, counties, places, and metropolitan areas within the United States. The timing of estimates and availability of demographic detail vary by geographic level. Therefore, estimates for a specific year may be inconsistent across multiple geographies, or within a geography (e.g., states) where new totals may have been issues before estimates by demographic characteristics have been updated. The schedule of releases is available at

All persons who are "usually resident" in a specified geographic area. The U.S. resident population includes all persons who usually reside in the 50 states and the District of Columbia, but excludes residents of the Commonwealth of Puerto Rico and the Island areas under U.S. sovereignty or jurisdiction (principally American Samoa, Guam, United States Virgin Islands, and the Commonwealth of the Northern Mariana Islands). In addition, the U.S. resident population excludes U.S. Armed Forces overseas and civilian U.S. citizens whose usual place of residence is outside the United States.

Estimates Base - The population count or estimate used as the starting point in the estimates process. It can be the most recent updated Census count or the estimate for a previous date within the same vintage. (The vintage year (e.g., 2014) refers to the final year of the time series).

Population percent change, 2010 to 2014, is derived by dividing the difference between the 2013 population estimate and the April 1, 2010 estimates base by the April 1, 2010 estimates base.

Scope and Methodology